F5 BIG-IP TMM Crash via Classification Profile on Virtual Server
CVE-2025-54479 Published on October 15, 2025
BIG-IP PEM vulnerability
When a classification profile is configured on a virtual server without an HTTP or HTTP/2 profile, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Vulnerability Analysis
CVE-2025-54479 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2025-54479 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2025-54479
stack.watch emails you whenever new vulnerabilities are published in F5 Networks Big Ip or F5 Networks . Just hit a watch button to start following.
Affected Versions
F5 BIG-IP:- Version 17.5.0 and below 17.5.1 is affected.
- Version 17.1.0 and below 17.1.3 is affected.
- Version 16.1.0 and below 16.1.6.1 is affected.
- Version 15.1.0 and below 15.1.10.8 is affected.
- Version 2.0.0 and below * is affected.
- Version 1.1.0 and below * is affected.
- Version 2.0.0 and below * is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.